Mechanical power



(No Model.)

J. H. FREY.

MECHANICAL POWER.

Patented Dec. 2

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q mtmaooco UNITED STATES PATENT ()FFICE.

JAMES H. FREY, OF CINCINNATI, Ol-IIO.

MECHANICAL POWER.

SPECIFICATION forming part of Letters Patent No. 441,868, dated December2, 1890.

Application filed. April '7, 1890- Serial No. 346,90'7- (No model.)

To all whom it may concern:

Be it known that I, JAMES H. FREY, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented a new and useful Mechanical Power, of which the followingis a specification.

This invention relates to mechanical powers, and is more particularly atreadle adapted to be applied to the tables of sewing-machines, lathes,and similar machines now in use; and the object of the invention is toimprove the construction of similar double-actin g treadles now upon themarket and in use. This object I accomplish by dividing the treadlesinto two halves, one of which is connected directly with thecrank-wristand the other of which carries an arm passing under the firstand having a bearing upon the supporting-shaft at its outer end and asecond pitman connected to the outer end of a rod rigidly connected withthis arm, and I effect the ready application of this treadle to machinesnow in use by providing oppositely-tlueaded sockets at the opposite endsof the two pitmen, all as will be hereinafter more fully described, andas is illustrated in the drawings, in whicha Figure 1 is an end view ofthis improved treadle. Fig. 2 a plan view thereof, and Fig. 3 anenlarged front elevation of the treadle proper.

Referring to the said drawings, the letter A designates the frame-workof the machine, and B the fly-wheel, having a crank-wrist K.

G is the supportingshaft between the sides of the frames A at theirlower ends, and D F are the half-treadles journaled upon said shaft, aswill be understood.

G is a pitman connecting the crank-wrist K with the toe end of thetreadle F, and II is another pitman connecting said wrist with the outerend of a rod D, which is com nected with the heel end of the othertreadle D, all as is now old in the art.

Coming now to the present invention, the letter D indicates an armrigidly connected with the treadle D and passing beneath the treadle F,and D is a bearing formed in the outer end of this arm upon the shaft 0.The rod D is rigidly connected with the arm D at its bearing, andprojects therefrom, and to the free end of this rod the pitman H isconnected, whereas the left treadle D has heretofore been connecteddirectly with the shaft 0, and that in turn with the rod D; hence thesaid shaft had to be mounted in bearings at its ends. By employing theconstruction above described I am enabled to apply this treadle tomachine-frames now in use without altering their structure, as byproviding bearings for the ends of the supporting-shaft.

The letter L designates internally-screwthreaded sockets receiving theoppositelythreaded ends of the pitmen G and H, and these sockets arepivoted at their closed ends to the members K F and D as shown.

By giving the arm D an additional bearing D on the shaft C it is greatlystrengthened, and the necessity for having the shaft oscillate isavoided, and by using the oppositely-threaded sockets L and pitmen G andH the device can be fitted to machines having the fiy-wheel located atdifferent heights above the shaft 0, all as will be clearly understoodby a person skilled in this art.

I claim as the salient points of this invention- 1. The two treadles Dand F, a pitman pivoted to the toe of the latter, an arm rigidlyconnected to the other treadle D and adapted to pass beneath the treadleF, a hearing at its outer end turning on the fixed supportingshaft 0, ared I) projecting from said bearing, and a pitman pivoted to the freeend of said rod, the whole constructed as and for the purpose set forth.

2. The two treadles D and F, an arm rigidly connected to the treadle Dand adapted to pass beneath the treadle F, a hearing at its outer endturning on the fixed supporting shaft 0, a rod D projecting from saidhearing, internally-threaded sockets L, pivoted to the toe of thetreadle F and to the free end of the rod D pitmen G ll, havingoppositelythreaded ends the lower ones of which are 9 seated in saidsockets, and other internallythreaded sockets screwed onto the upperends of said pitmen and adapted to be pivoted on the wrist-pin K, thewhole constructed as and for the purpose set forth.

3. The two treadles D F, a pitman G, pivmy own I have hereto affixed mysignature in oted to the treadle F, and an arm D, rigidly presence oftwo Witnesses. connected to the treadle D and passing beneat-h thet-readle F, a rod D attached to said FREY' 5 arm D and the pitnlan H,connected to said Vitnesses:

rod, as set forth. FRANK A. FREY,

In testimony that I claim the foregoing as V. B. DAVIS.

